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In order to profit from all the benefits of a waveguide laser device like alignment-free and maintenance-free operation, decoupling from technical noise, and compactness an all fiber setup is highly desirable. Recently, all- fiber lasers utilizing a spectral or a temporal filter have been published, delivering pulse durations down to 179 fs and 195 fs, respectively.this contribution, we report on...
We demonstrate tuning of the output spectrum of an HOM fiber module by changing the dispersion curve. Spectral feature wavelengths can be changed systematically by changing the location of the zero-dispersion wavelength.
Recent demonstrations of anomalous dispersion in the visible and NIR wavelengths with conventional all-silica fibers, previously considered feasible primarily with small-Aeff microstructured fibers, has opened the door to a variety of linear and nonlinear applications.
We propose a novel modal delay measurement technique for higher-order mode fiber based on real-time optical frequency-domain reflectometry (OFDR) using an extremely simple, entirely passive and ultrafast wavelength sweeping mechanism, namely dispersion-induced optical pulse stretching.
Higher-order modes propagating in large-mode-area fibers are characterized using spatially-resolved modal interference. The measurements provide the fraction of power contained in multiple higher-order-modes, and allow for mode identification without prior knowledge of the fiber characteristics.
Modelocking in Yb-doped figure-eight fiber lasers is demonstrated utilizing dispersion compensation from a higher-order-mode module with anomalous dispersion. Pulses were compressed to 91 fs. the shortest demonstrated pulses for a Yb-doped figure-eight fiber laser.
Light propagation in higher-order modes of few-mode fibers leads to unique dispersive properties that are challenging or impossible to achieve in conventional fibers. We will describe their application to devices utilising high-peak-power and ultra-short pulses.
We demonstrate a method of generating femtosecond pulses at 1350 nm by exciting Cherenkov radiation in a higher-order-mode fiber with a 1064 nm source. We measure a 134 fs, 0.66 nJ output pulse.
Light propagation in higher-order modes of few-mode fibers leads to unique dispersive properties and record-large modal-areas that are challenging or impossible to achieve in conventional fibers. We will describe the application of these fibers to femtosecond pulses
We present a technique for the self-referencing simultaneous characterization of the chromatic dispersion of the modes of a multimode structure. The group delays of the two modes of a high-order mode dispersion-compensating module are measured.
We use switchable fiber-gratings in higher-order-mode fibers to demonstrate a wavelength-continuous adjustable dispersion-compensator (tuning range ~ 435 ps/nm) that is broadband (30 nm) and low loss (average ~ 3.7 dB). 40 Gb/s transmission tests reveal penalty-free operation
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